BLOOD FLUKES Flashcards
Manson’s Blood fluke
S. Mansoni
Oriental blood fluke
S. Japonicum
Vesical Blood Fluke
S. Haematobium
Infective stage of blood flukes
Forked tailed cercaria
MOT OF BLOOD FLUKES
Skin penetration
Number of host in blood flukes
1 definitive host = man
1 intermediate = snail/ mollusk
Requires 2 host
MOT: Entry of cercaria in the skin can lead to ?
Schistosomiasis or Bilharziasis
What does blood flukes infect?
Mesenteric veins not blood
Sexes in blood flukes are called
Non hermaphroditic or dioecious
Dioecious or non hermaphroditic means
Separate sexes or romantic pairs of male and female
The body of the adult blood fluke is
ELONGATED , cylindrical like round worm
The body of the Male worms of blood flukes are
Shorter and robust
The body of females in blood flukes are
Longer and slender which is healthy
Dows males and female are provided with oral and ventral suckers
Yes,
acetebelumn
Used by male worms to vary female during copulation
a. Acetebelum
B. Gynecophoric canal
B. Gynecophoric canal
Adult worms of blood flukes are
A. Non operculated
B. Operculated
A. Non- operculate cell is intact
Diagnostic stage of blood flukes
Eggs or ova
Mode of transmission of blood flukes
Skin penetration
What specimen is used for detection of blood flukes
Stool or urine
S. Japonicum habitat
A. Inferior mesenteric veins or veins draining rectum
B.superior mesenteric veins
C. Vesical veins/ urinary bladder
B. Superior mesenteric veins
S. Mansoni habitat
A. Inferior mesenteric veins or veins draining rectum
B.superior mesenteric veins
C. Vesical veins/ urinary bladder
A. Inferior mesenteric / draining rectum
S. Haematobium habitat
A. Inferior mesenteric veins or veins draining rectum
B.superior mesenteric veins
C. Vesical veins/ urinary bladder
C. Vesical veins / urinary bladder
Specimen for diagnosis for s. Japonicum
Stool eggs
Diagnostic stage for s. Mansoni
Eggs stool
S haematobium specimen for diagnosis
Urine
Smooth integumentary
S. Japonicum
With course tuberculation
S. Mansoni
Fine Tuberculations
S. Haemotobium
Largest schistosomia
Adult s. Japonicum
Smallest adult blood flukes
S. Mansoni
Used To differentiate adult worms from blood flukes
Size and integumentary
Number of testes of s. Japonicum
A. 8-9
B.6-8
C. 4-5
B.6-8
Number of testes of s. Mansoni
A. 8-9
B.6-8
C. 4-5
A. 8-9
Number of testes of s. Haematobium
A. 8-9
B.6-8
C. 4-5
C.4-5
Number of eggs in uterus of s. Japonicum
A. 50-100
B. 1-4
C. 20-30
A.50-100
Number of egg in uterus of s. Mansoni
A. 8-9
B.6-8
C. 1-4
C. 1-4
Number of eggs in uterus of haematobium
A. 50-100
B. 1-4
C. 20-30
C. 20-30
cercaria that has lost its tail ff: entry to human
skin
SCHISTOSOMULE
(LARVA THAT INFECT THE VEINS)
A form of dermatitis that may develop because
of cercarial penetration
SWIMMER’S ITCH
